Window lock



Nov. 24, 1 936. c. E. HENNIGAN WINDOW LOCK Filed May 24, 1934 2 Sheets-Sheet l NOV- 24,. 1936- c. E. HENNIGAN 2,062,176

WINDOW LOCK Filed May 24, 1954 2 Sheets-Sheet 2 Patented Nov. 24, 1936 UNlTED STATES etant FATENT GFFIQE 9 Claims.

My invention relates to improvements in window locks particularly of the type having the bolt end receiving portion thereof mounted on the upper window sash side bar and the bolt portion thereof mounted on the lower sash top bar, the bolt end receiving portion being provided. with selective spaced holes therein and the bolt portion being provided with a bolt normally urged into a position to slide into a selective one of said holes to bolt the upper and lower window sashes together at selective open amounts so that they may move up and down together if desired as a unit.

An object of my invention is to provide an improved construction of this description in which the upper and lower window sashes can be positively locked free from tampering from outside, preferably by means of a detachable key insertable into a window lock casing in which the slidable bolt member is mounted to withdraw the bolt from any selected hole and lock it in a retracted unlocked position in the casing, or also if desired may slide the bolt so that it may remain in locked position. Thus, the window can not be ope-ned at all from the outside or the inside without employing the detachable key.

Further features of my invention relate to the specific type of sliding bolt and lock structure I preferably employ and the specific construction thereof which consists of a minimum number of 30| simple working parts, which may be readily fabricated from standard types of stock.

A further feature of my invention is to provide a Window lock of this description in which the key is moved to a position to normally retain the bolt win unlocked position and which may be readily inserted into the lock casing and may be provided with any desired numbers of dilerent types of key formations on the end thereof as is usual in keys.

These and such other objects'of my invention as may hereinafter appear will be best understood from a description of an embodiment thereof, such as is shown in the accompanying drawings.

window sash is slightly raised relative to the upper window sash.

Fig. 4 is a` horizontal sectional view taken through the top of the lock casing underneath the cover thereof with the bolt shown in elevation in locked position.

Fig. 5 is a horizontal sectional View taken through the top of the casing generally similar to Fig. 4 with the key inserted through the rear end of the casing and retaining the locking boltv in retracted position to permit relative movement of the upper and lower window sashes.

Fig. 6 is a horizontal sectional View generally similar to Fig. 5 showing the use 0f an alternative type of key and an alternative method of operating the lock which consists of laterally sliding the bolt to engage one of the guide lugs thereof to retain the bolt in retracted unlocked position.

Fig. '7 is a disassembled perspective view of the upper casing member, the lower casing member and my improved type of slidable bolt.

In the drawings, wherein like characters of reference indicate like parts throughout, Illgenerally indicates a` window lock constructed in accordance with my invention.

As stated hitherto, my improved window lock is adapted to be attached to the relatively slidable upper and lower window sashes I2 and I4 respectively, one of said sashes I2 having the vertically aligned holes I6 therein preferably formed in a side bar I8 of the upper window sash I2 and in my preferred embodiment comprising the spaced holes I6 formed in the metal strips 2Q secured by means of the screws 22 or otherwise to the inside of the upper sash side bar I8, said strips 2B provided with the holes I6 forming the female or bolt end retaining portion of the lock into which the slidable bolt 24 or male member 24 may be selectively inserted to lock the upper and lower window sashes I2 and I4 against relative movement. The bolt 24 is adapted to be slidably mounted on the top bar 26 ofV the lower sash Ill slidable with said sash to opposite the desired one of the selective bolt holes I6.

In my preferred embodiment, the slidable bolt 24 is adapted to be mounted in the casing 28, which as shown in Figs. 2 and 3 is adapted to be attached across the top of the lower sash top bar 2B in line With said holesy and in my preferred embodiment includes the base 30 constructed of flat sheet material having the holes 32 therein to receive screws for attachment to the upper surface of the lower sash top bar 26, the side walls 34 extending upwardly to form outwardly flaring lips 36 spaced from said base 32, front and rear sets 38 and 40 respectively of two spaced aligned lugs 42 projecting upwardly from said base preferably being struck up therefrom, each having an arm 44 projecting inwardly thereof from the top thereof and a lug 46 struck up or otherwise formed from the center portion of said base. It is thus obvious that the lugs 42 form bolt guide means in said casing and the lug 46 forms a spring stop.

In the preferred embodiment of my invention shown, I also provide the casing top 48 having the side walls 50 thereof inwardly bent to form channels 52 to slidably receive the base side wall lips 36 to secure said top 48 to said base 30, a centrally raised chamber forming center portion 54 preferably also having an integral depending rear wall 56 having the screw receiving hole 58 therein to receive a screw for securement thereof to the rear of said lower sash top bar 26, said wall 56 also preferably having a vertical slot 68 in the upper portion thereof opposite said chamber 54 having an enlarged center portion 62. The slidable bolt 24 preferably is provided with the rectangular portion 64 of lesser length than said casing slidable in said casing 28 and retained in alignment therein by the side walls, and inwardly projecting arms 44 of said sets 38 and 40 of lugs 42. Said bolt 24 is preferably provided with a rounded front end 66 for selectively tting in one of the window strip holes I6 to lock said upper and lower window sashes together. The rectangular portion 64 is preferably provided with the rectangular cut out 68 centrally thereof for receiving said central lug 46. The rear end of said bolt is preferably provided with the laterally projecting cut out 10 in my preferred embodiment comprising the arro-w-head shaped cut out 10. Said outer end in my preferred embodiment is also preferably provided with the threaded hole 12. I also provide means normally urging said bolt inwards to locked position. In my preferred embodiment said means preferably comprises an expansion spring 14 resting in said cut out 68 abutting said central lug 46 and the rear surface I6 of the front end of said rectangular bolt portion in front of said central rectangular cut out 68.

Suitable means are provided to withdraw the bolt from the locked position within its selected hole, in my preferred embodiment said means preferably comprising detachable key means which will retain or lock the bolt in an unlocked position. I have shown in my preferred embodiment two alternative types of key means which may be alternatively or supplementally employed. My preferred type of key means 18 comprises the fiat key provided with the laterally projecting portion near the front end thereof, in my preferred embodiment said laterally projecting portion 80 comprising an arrow head. The side walls of said key means are also preferably provided with the aligned slots 82. Said key means 'I8 as shown in Fig. l is inserted through the vertical slot 60 in the casing top rear wall 56 and rotated a quarter turn to bring the arrow head or laterally projecting portion 80 into said arrow-head shaped cut out 'I6 to contact the laterally projecting portion of said bolt and adapted on rearward movement thereof to withdraw the front of said bolt rearwardly against the pressure of said spring I4 out of its strip hole I6 and either on downward movement thereof to engage the lateral slots 82 thereof against the casing rear wall 56 on each side of the narrowed lower portion of said slot 66 through the forward pressure of the spring 14, or on lateral movement thereof tilt said at bolt as shown in Fig. 6 so that the front flat wall 84 thereof may abut one of said front set of lugs 38. It is thus obvious that with this type of key 18 it may be locked in either one of these two manners, namely, by either causing the slots 82 thereof to engage in the lower end of the slot 60 as shown in Fig. 5, or to tilt the entire bolt so that the front wall 84 thereof will abut a lug 38.

In my preferred embodiment I have shown the alternative type of key means 86 comprising a shaft 88 having a knurled head 92 and a threaded inner end 90 adapted to be inserted within the threaded hole 12 and to laterally tilt the bolt as shown in Fig. 6 so that the front end 84 thereof may abut one of said front sets of lugs 38 to retain the bolt in retracted position.

The upper and lower window sashes I2 and I4 can only be relatively moved when the bolt is in an unlocked position after suitable key means such as the key 86, or key 'I8 has been inserted through the slot 60 and manipulated so as to withdraw the bolt 24 from its respective bolt hole and further manipulated if desired to retain the bolt in an unlocked position by moving the key downwardly as shown in Fig. 5, or by tilting the bolt laterally as shown in Fig. 6. The bolt can only be moved to a locked position after the key has been manipulated so as to free the bolt to permit the spring 14 to urge it forward into a position slidable into its selected bolt hole I6 on relative movement between the upper and lower window sashes I2 and I4.

It is apparent that I have provided an improved type of window lock for this purpose, in which all parts of the casing and strip may be readily made from relatively cheap sheet material and which includes the mere additional elements of a locking bolt, spring, attaching means and the appropriate alternative or supplemental type of keys hitherto described.

It is thus apparent that I have provided a novel type of window lock for this purpose, sure and positive in its action and constructed of a minimum number of parts with the advantages explained in detail above. v

It is understood that my invention is not limited to the specific embodiment shown and that various deviations may be made without departing from the spirit and scope of the appended claims.

What I claim is:

1. In a window lock for upper and lower sashes with a side bar of the upper sash having a plurality of vertically aligned selective keeper means thereon, a casing adapted to be attached across the top of the lower sash top bar in line with said keeper means, comprising a base constructed of at sheet material having holes therein to receive screws for attachment to the upper surface of said lower sash top bar, side walls bentr upwardly to form lips spaced from said base, front and rear sets of two spaced aligned bolt retaining lugs projecting upwardly from said base, each having arms projecting inwardly from the tops thereof, and a lug centrally struck up from said base and a casing top having the side walls thereof inwardly bent tor form channels to slidably receive the base sidewall lips to secure said top to said base, and a centrally raised chamber forming center portion having an integral depending rear wall having a screw receiving hole therein to receive a screw for securement thereof to the rear of said lower window sash top bar, and a central slot in the upper portion thereof opposite said chamber having an enlarged center portion and a narrowed lower portion, a flat bolt having a flat front wall, a rectangular center portion of lesser length than said casing slidable in said casing and retained in alignment therein by the side walls and inwardly projecting arms of said sets of lugs having a front end for selectively engaging said keeper means to lock said upper and lower window sashes together, a rectangular cut out centrally thereof receiving said central lug and a rear end provided with an arrow head cut out and a threaded hole, and expansion spring means resting in said cut out abutting said central lug and the rear surface of said bolt front wall normally urging the front end of said bolt forwardly to a locking position, whereby key means comprising a flat arrow headed key having aligned slots in the side walls thereof insertable through said vertical slot in said casing top rear wall with the arrow head thereof, within said arrow shaped out out may withdraw the front end of said bolt rearwardly against the pressure of said spring means out of its respective keeper means and either on downward movement thereof engage the lateral slots of said key in the narrowed lower side walls of said slot in the casing rear wall or on lateral movement thereof tilt said flat bolt `so that the front flat wall thereof may abut one of said front set of lugs or a supplemental key having a threaded inner end may be inserted in said threaded hole to withdraw the front end of said bolt rearwardly against the pressure of said spring out of its respective keeper means and on lateral movement thereof tilt said fiat bolt so that the front flat wall thereof may abut one of said front set of lugs.

2. In a window lock for upper and lower sashes with a side bar of the upper sash having a plurality of vertically aligned selective keeper means thereon, a casing adapted to be attached across the top of said lower window sash top bar in line with said keeper means comprising a base having bolt guide means therein, a spring stop thereon and a detachable top for said base having a downwardly projecting rear wall having a vertical slot in the upper portion thereof having an enlarged center portion and a narrowed lower portion, a bolt having a rectangular center portion of less length than said casing slidable in said casing having a front end for selectively engaging said keeper means to lock said upper and lower window sashes together, a rectangular cut out centrally thereof and a rear wall provided with a'laterally projecting portion, and expansion spring means resting in said cut out abutting said stop means and the rear surface of said bolt front wall normally urging the front end of said bolt forwardly in a locking position whereby detachable key means having a laterally projecting portion at the front end thereof and lateral slots therein may be inserted through said rear casing wall slot into engagement with said laterally projecting bolt portion to withraw the front end of said bolt rearwardly against the pressure of said spring means out of its respective keeper means and on downward movement thereof engage the lateral slots thereof in the narrowed lower portion of said slot in the casing rear wall.

3. In a window lock for upper and lower sashes with a side bar of the upper sash having a plurality of vertically aligned selective keeper means thereon, a casing adapted to be attached across the top of said lower window sash top bar in line with said keeper means comprising a base constructed of flat sheet material having holes therein to receive screws for atachment to the upper surface of said lower` window sash top bar, side walls bent upwardly to form lips spaced from said base, front and rear sets of two spaced aligned bolt retaining lugs projecting upwardly from said base each having arms projecting inwardly from the tops thereof, and a lug centrally struck upfrom said base and a casing top having the side walls thereof inwardly bent toform channels to slidably receive the base side wall lips to secure said top to said base, and a centrally raised chamber forming center portion having an integral depending rear wall having a screw receiving hole therein to receive a screw for securement thereof to the rear of said lower window sash top bar, and a central slot in the upper portion thereof opposite said chamber having an enlarged center portion and a narrowed lower portion, a bolt having a rectangular center portion of less length than said casing slidable in said casing and retained in alignment therein by the side walls and inwardly projecting arms of said sets of lugs having a front end for selectively engaging said keeper means to lock said upper and lower window sashes together, a rectangular cut out centrally thereof receiving said central lug and a rear end provided with a laterally projecting portion, and expansion spring means resting in said out out abutting said central lug and the rear surface of said bolt front wall normally urging the front end of said bolt forwardly in a locking position whereby detachable key means having a laterally projecting portion at the front end thereof and aligned slots in the side walls thereof may be inserted through said vertical slot in said casing top rear wall to engage said front end with the laterally projecting bolt portion to withdraw the front end of said bolt rearwardly against the pressure of said spring means out of its keeper means and on downward movement thereof engage the lateral slots thereof in the narrowed lower side walls of said slot in the casing rear wall.

4. In a windo-w lock for upper and lower sashes with a side bar of the upper sash having a plurality of vertically aligned selective keeper means thereon, a casing adapted to be attached across the top of the lower window sash top bar, a bolt loosely and laterally tiltably mounted in said casing in line with said keeper means having a front end for selectively engaging said keeper means to lock said upper and lower window sashes together, sto-p means on the side wall thereof, and a rear end provided with an arrow headed out out, stop means mounted on said window sash top bar, and expansion spring means normally urging the front end of said bolt forwardly in a locking position whereby key means comprising an arrow headed key may be inserted into engagement with said arrow headed cut out to withdraw the front end of said bolt rearwardly against the pressure of said spring means out of its keeper means and on lateral movement thereof tilt said bolt so that the stop means thereof may abut said top bar stop means.

5. In a window lock for upper and lower sashes with a side bar of the upper sash having a plurality of vertically aligned selective keeper means thereon, a casing adapted to be attached across the top of the lower window sash top bar, a bolt loosely and laterally tiltably mounted in said casing in line with said keeper means having a front end for selectively engaging said keeper means to lock said upper and lower window sashes together, stop means on the side wall thereof, and a rear end provided with a laterally projecting portion, stop means mounted on said window sash top bar, and expansion spring means normally urging the front end of said bolt forwardly in a locking position whereby key means having a laterally projecting portion at the front end thereof may be inserted into engagement with said laterally projecting belt portion to withdraw the front end of said bolt rearwardly against the pressure of said spring means out of its keeper means and on lateral movement thereof tilt said bolt so that the stop means thereof may abut said top bar stop means.

6. In a window lock for upper and lower sashes with a side bar of the upper sash having a plurality of vertically aligned selective keeper means thereon, a casing adapted to be attached across the top of the' lower window sash top bar, a bolt loosely and laterally tiltably mounted in said casing in alignment with said vertically aligned selective keeper means having stop means on the side wall thereof, and a rear end provided with a threaded hole, expansion spring means normally urging the front end of said bolt forwardly in a locking position, stop means mounted on said window sash top bar whereby a key having a threaded inner end may be inserted in said threaded hole to withdraw the front end of said bolt rearwardly against the pressure of said spring means out of its keeper means and on lateral movement thereof to tilt said bolt so that the stop means thereof may abut said top bar stop means.

7. In a window lock for upper and lower sashes with a side bar of the upper sash having a plurality of vertically aligned selective keeper means thereon, a casing comprising a base having bolt guide means therein, a spring stop thereon and a detachable top for said base having a downwardly projecting rear wall having a vertical slot in the upper portion thereof having an enlarged center portion and a narrowed lower portion, a at bolt adapted to be attached across the top of the lower sash top bar in line with said keeper means having a at front wall, a rectangular center portion of less length than said casing slidable in said casing having a front end for selectively engaging said keeper means to lock said upper and lower window sashes together, a rectangular cut out centrally thereof and a rear end provided with a laterally projecting portion, and expansion spring means resting in said cut out abutting said spring stop and the rear surface of said bolt front wall normally urging the front end of said bolt forwardly in a locking position whereby key means having a laterally projecting portion at the front end thereof and slot means in the side wall thereof may be inserted through said casing slot into engagement with said laterally projecting bolt portion to withdraw the front end of said bolt rearwardly against the pressure of said spring means out of its respective keeper means and on downward movement thereof engage the slot means thereof in the narrowed lower portion of said slot in the casing rear wall, or on lateral movement thereof tilt said bolt so that the front wall thereof may abut said bolt guide means.

8. In a window lock for upper and lower sashes with a side bar of the upper sash having a plurality of vertically aligned selective keeper means thereon, a casing, comprising a base having bolt guide means therein, a spring stop thereon and a detachable top for said base having a downwardly projecting rear Wall having a verticalslot in the upper portion thereof and a narrowed lower portion having an enlarged center portion and a narrowed lower portion, a bolt adapted to be attached across the top of the lower sash top bar in line with said keeper means having a fiat front wall, a rectangular center portion of less length than said casing slidable in said casing having a front end for selectively fitting in one of said keeper means to lock said upper and lower window sashes together, a rectangular cut out centrally thereof and a rear end provided with a laterally projecting portion and a threaded hole, and expansion spring means resting in said cut out abutting said spring stop and the rear surface of said bolt front wall normally urging the front end of said bolt forwardly in a locking position whereby key means having stop means in the side wall thereof and a laterally projecting portion at the front end thereof may be inserted into engagement with said laterally projecting bolt portion to withdraw the front end of said bolt rearwardly against the pressure of said spring means out of its respective keeper means and on downward movement thereof engage the slot means thereof in the narrowed lower portion of said slot in the casing rear wall or on lateral movement thereof tilt said bolt so that the front iiat wall thereof may abut one of said bolt guide means or a supplemental key having a threaded inner end may be inserted in said threaded hole to withdraw the front end of said bolt rearwardly against the pressure of said spring means out of its respective keeper means and on lateral movement thereof tilt said bolt so that the front at wall thereof may abut one of said bolt guide means,

9. In a window sash lock for upper and lower sashes with a side bar of the upper sash having a plurality of vertically aligned selective keeper means thereon, a casing adapted to be attached across the lower sash top bar having a rear wall having a key hole therein, a bolt having stop means on the side wall thereof and a rear end having a key engaging means thereon, said bolt being loosely slidably and laterally tiltably mounted within said casing in alignment with said vertically aligned selective keeper means, expansion spring means normally urging the front end of said bolt forwardly in a locking position, and stop means mounted on said lower window sash top bar whereby a key having a bolt engaging portion on the side wall thereof may be inserted through said casing hole for engagement with the key engaging means on the rear end of said bolt, to withdraw said bolt in rearward unlocked position and said key may be selectively tilted vertically to cause the notch therein to engage an edge of the key hole portion or be tilted laterally so that the stop means thereof may abut said sash bar stop means to secure said bolt in retracted position.

CHARLES E. HENNIGAN. 

